

class KnowledgeSource(object):
    def __init__(self):
        pass;
    
    def getGroupValidation(self, activityGrp, sFrom):
        print "Query of GroupValidation of:", activityGrp.name, sFrom;
        return True;
    
    def getConsistentStates(self, aStateSpace, aListConsistentSt, aScores, sTime, aSubjects):
        print "Query of ConsistentStates of subjects:", aSubjects, "at time", sTime;
        return None;